I don't understand this I have spent many points on this same question so this time I will be giving brainliest for the first correct answer. Thanks so much for your help!!!

Given:

Solution:

Complex formula:

Let us simplify one by one.

|3 + 4i| = 5

|3 - 4i| = 5

|-3 + 4i| = 5

|-3 - 4i| = 5

Substitute these in the given expression:

The solution of the expression is 20.

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.